Patent GB-422199-A (GB)
Title: Improvements in or relating to printing presses
IPC: B41F3/58
Filed: 1933-07-03
Abstract: 422,199. Printing-machines. GOSS PRINTING PRESS CO., 1535, South Paulina Street, Chicago, U.S.A.-(Assignees of Cox, P. F.; 1535, South Paulina Street, Chicago, U.S.A.) July 3, 1933, No. 18853. Convention date, July 2, 1932. [Classes 100 (i) and 100 (ii)] Cylinder machines ; stopping and starting arrangements.-In printing-machines of the type in which an impression-roller travels over a stationary flat bed, the printing-machine and an associated folding-machine are driven from a motor optionally coupled to either or both machines according to the kind of product which it is desired to produce. The driving-motor 400, Fig. 6, is coupled by a belt 408 passing over V-pulleys 405 to a wheel 406 adapted to be coupled to a shaft 410 by a clutch 407 operated by a lever 434 connected by a rod 433 to a hand-lever 430. A gear wheel 412 slidably keyed to the shaft 410 is secured by a set-screw 413 either in or out of mesh with a gear-wheel 414 driving the printing-machine through a gear 80 on a shaft 82, Fig. 1. Another gear 420, also detachably keyed to the shaft 410, is provided for driving the folding - machine similarly. The impression-roller carriage 88, Fig. 1, is reciprocated from the gear 80 by a connecting-rod 84. Both the impression-roller 70 and the associated flat-bed 60 are double the width of the web being printed. The web passes from a roll 24 over guide rollers 162, 163, 165 and a double-width looping-roller 164 to one end of the cylinder 70, and from thence to an arrangement of turning-bars 170, 172 which directs it to the other end of the cylinder, reversed if desired, so that the web is either perfected or printed on one side in one or two colours. From the cylinder 70, the printed web then passes over the looping-roller 164 alongside the unprinted web, to a guide-roller 178 and rewinding or cutting and folding apparatus. The looping-roller, which is carried by levers 180 oscillated from the shaft 82, takes up the slack in the unprinted web during the printing traverse of the roller 70 and pays it out when the roller 70 is raised during its non-printing traverse, the reverse action taking place on the printed web. When the printed web is to be wound into roll form, the rewind roll is supported on driven rollers 200 with its spindle movable in vertical slots 206 in a frame 222, and when complete, the roll can be moved along horizontal rails to seat its spindle in recesses 223 for future use. A slitter 192 may co-operate with the guide-roller 178 for dividing the web longitudinally. Alternative to the rewinding, the printed web may be cut into sheets by knives on rollers 212, 214, and be fed by tapes 219 to the folding-machine comprising blades 260, 278, 285 co-operating with rollers to impart a series of perpendicular folds to the sheets. One or more of the previously printed webs supported on the frame 222 may be associated at the rollers 212, 214 with the web being printed, prior to the cutting and folding operations. Further, feed tables are provided adjacent to each folder so that insert sheets fed therefrom may be associated with the cut sheets. Also, the rewound web may be cut and folded while the printing-machine is inoperative, if desired. According to the Specification as open to inspection under Sect. 91, the web from the supply roll 24 passes over a tensioning roller on a weighted lever, the spindle of which has an eccentric pin engaging a spring-pressed lever carrying a brake shoe engaging a drum on the supply roll spindle so as to vary the braking effect. Also, means for lifting a rewound roll on the horizontal part of the frame 222 are provided comprising a rope with a hook at one end and passing over a pulley to hand-operated worm and worm-wheel mechanism. The cylinder 70 is raised and lowered and the inking-apparatus operated as described in Specification 422,365. Folding g paper; associating - apparatus.-In the folding-machine, all the blades, forwarding tapes, and delivery-apparatus aredriven directly from a cam-shaft 355, Fig. 13 (Cancelled). The products are carried beneath the blade 260 by tapes 290, 291 and are registered by adjustable stops. Guides 315<1> direct the once-folded product to the tapes 300, 301 of the second and perpendicular folder 278, and similar guides 318 direct the product to the third folder 285. One of each pair of folding-rollers, e.g. roller 271, is mounted on a spring-pressed lever 272 adjusted by a set-screw 274. From the folder 285 the products pass to a stacker 334, but if desired, the folder 285 may be byepassed by moving the part 324 of the guides 318 about a pivot 325 away from its normal position, so that the products are delivered by oscillating fingers 331 to a moving conveyer 326. A feedtable 341 is situated above the first folder whereby full-size inserts may be associated with the main product. Another feed-table, situated beneath the table 341 and laterally of the blade 260, is provided whereby half-size sheets may be inserted as the first fold is being imparted. A third feed-table with its forward end adjacent to the outlet from the guides 315<1> is provided for inserting half-size sheets prior to the second folding. Drop-rollers operated from the camshaft 355 are associated with the forward ends of the feed-tables for feeding the insert sheets. This subject-matter does not appear in the Specification as accepted.